JP6489522B2 - Lighting control apparatus and lighting control method - Google Patents

Description

  The present invention relates to a lighting control device and a lighting control method, and more particularly to a technique for controlling lighting in conjunction with a detection result of a human sensor.

  Conventionally, various techniques for controlling illumination in conjunction with the detection result of a human sensor have been proposed (see, for example, Patent Document 1).

  According to the technique of Patent Document 1, it is determined by a human sensor whether a stay area where a person stays or a non-stay area where a person stays, and different illumination control is performed according to the determination result. Thereby, it can be determined whether the divided area into which the illumination area is divided is a stay area or a non-stay area, and different illumination control is performed for each determined area.

JP 2013-109876 A

  However, in the technique of Patent Document 1, when a person moves from the detection range of one human sensor to the detection range of another human sensor, it passes through a region that does not belong to any human sensor detection range. Sometimes, there is a problem that unintended lighting control is performed. That is, when a person passes through an area that does not belong to any human sensor, it is determined that there is no person, and the illuminance is reduced or the illumination is turned off.

  For this reason, people on the move not only feel uncomfortable, but also have to move around the room under low illuminance or darkness, resulting in dangerous situations such as hitting objects or falling over. There is also a possibility of end.

  Accordingly, the present invention has been made in view of the above situation, and provides an illumination control device and an illumination control method for performing illumination control that suppresses discomfort or a dangerous state for a moving person. The purpose is to provide.

In order to achieve the above object, one embodiment of an illumination control device according to the present invention is an illumination that controls illumination of a room in which one or more lighting fixtures having a plurality of lighting modes and two or more human sensors are installed. A control device, a detection result acquisition unit for acquiring detection results of the two or more human sensors, a plurality of combinations of detection results of the two or more human sensors, and a lighting mode of the lighting fixture; It corresponds to the combination of the detection results of the two or more human sensors acquired by the detection result acquisition unit by referring to the storage mode information indicating the correspondence between the lighting mode information and the lighting mode information. A control unit that specifies a lighting mode and controls the lighting fixture so that the lighting fixture is in the specified lighting mode, the control unit is the two or more acquired by the detection result acquisition unit Wherein the first lighting mode in accordance with the change of the combination of sensitive sensor detection result after identifying that switch to the second lighting mode, the first priority in advance granted priority to the first lighting mode When the second priority is compared with the second priority, which is a priority given in advance to the second lighting mode, and when the second priority is lower than the first priority, the combination of the detection results changes From the above, after maintaining the first lighting mode for a predetermined waiting time, switching to the second lighting mode, and when the second priority is not lower than the first priority, the combination of the detection results Is switched from the first lighting mode to the second lighting mode.

Moreover, in order to achieve the said objective, one form of the lighting control method which concerns on this invention controls the illumination of the room in which the 1 or more lighting fixture which has several lighting modes, and the 2 or more human sensor were installed. A lighting control method for detecting a detection result of the two or more human sensors, a plurality of combinations of the detection results of the two or more human sensors, and lighting of the lighting fixture The lighting mode corresponding to the combination of the detection results of the two or more human sensors acquired in the detection result acquisition step is specified by referring to the lighting mode information indicating the correspondence with the mode, and the specified lighting mode is set. A control step of controlling the luminaire so that the luminaire is formed. In the control step, the two or more human feelings acquired in the detection result acquisition step From the first lighting mode in accordance with the detection result changes in the combination of the capacitors after identifying that switch to the second lighting mode, the first priority in advance granted priority to the first lighting mode first When the second priority is compared with the second priority, which is a priority given in advance to the two lighting mode, and the second priority is lower than the first priority, the combination of the detection results is changed. When the first lighting mode is maintained for a predetermined waiting time and then switched to the second lighting mode, and the second priority is not lower than the first priority, the combination of the detection results is At the time of change, the first lighting mode is switched to the second lighting mode.

  The present invention can be realized not only as the above-described illumination control device and illumination control method, but also as a program that causes a computer to execute the illumination control method, or as a computer-readable recording medium that stores the program. You can also.

  The present invention provides an illumination control device and an illumination control method for performing illumination control that suppresses discomfort or a dangerous state for a moving person.

The figure explaining the scene where the illumination control system in Embodiment 1 is applied. FIG. 3 is a block diagram illustrating a configuration of a lighting control system according to the first embodiment. The figure which shows the data structure example of the lighting mode information in Embodiment 1 The flowchart which shows the function of switching control of the lighting mode using the priority in Embodiment 1 and 2 The figure which shows the example of a definition of "waiting time" in Embodiment 1 and 2 The flowchart which shows operation | movement of the illumination control system in Embodiment 1 and 2. The figure which shows the data structure example of the state transition table in Embodiment 1 Timing chart showing a specific operation example of the illumination control system in the first embodiment The figure which shows the example of a change of the lighting mode information in Embodiment 1 The figure which shows the example of an update of the state transition table accompanying the change of the lighting mode information shown by FIG. 9A The figure which shows the example of the information table which defines "space illumination intensity" in Embodiment 1 The figure explaining the scene where the illumination control system in Embodiment 2 is applied. FIG. 6 is a block diagram illustrating a configuration of a lighting control system according to Embodiment 2. The figure which shows the data structure example of the lighting mode information in Embodiment 2 The figure which shows the data structure example of the state transition table in Embodiment 2 Timing chart showing a specific operation example of the illumination control system in the second embodiment

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Each of the embodiments described below shows a preferred specific example of the present invention. The numerical values, the constituent elements, the arrangement positions and connection forms of the constituent elements, the steps, the order of the steps, and the like shown in the following embodiments are merely examples, and are not intended to limit the present invention. In addition, among the constituent elements in the following embodiments, constituent elements that are not described in the independent claims indicating the highest concept of the present invention are described as optional constituent elements that constitute a more preferable embodiment.

(Embodiment 1)
First, an illumination control device and an illumination control method according to the present invention will be described in detail using Embodiment 1 of the present invention (here, an illumination control system).

  FIG. 1 is a diagram for explaining a scene to which the illumination control system 10 according to Embodiment 1 of the present invention is applied. Here, an example is shown in which a lighting control system 10 is provided in a room 15 in which a person 16 lives.

  The illumination control system 10 is a system that controls illumination in conjunction with the detection result of the human sensor, and includes three lighting fixtures 11a to 11c, two human sensors 12a and 12b, and an illumination control device 20. Consists of

  The three lighting fixtures 11a to 11c are fixtures that illuminate in a plurality of lighting modes under the control of the lighting control device 20, for example, a down light having an LED light source. Light or ceiling light. Here, the “lighting mode” is an operation mode of the lighting fixtures 11 a to 11 c, and in this embodiment, an operation mode that realizes an illumination scene defined by the spatial illuminance in the room 15.

  The two human sensors 12a and 12b are sensors that detect the presence / absence of a person, for example, sensors that detect the presence / absence of a person using infrared rays, ultrasonic waves, or visible light. In FIG. 1, the detection ranges of the human sensors 12 a and 12 b are ranges between two dotted lines.

  The lighting control device 20 is a device that controls the lighting of the room 15 by controlling the lighting fixtures 11a to 11c based on the combination of detection results of the human sensors 12a and 12b. Even when the person 16 moves through a region that does not belong to any of the detection ranges of the human sensors 12a and 12b, the lighting control device 20 may cause the person 16 to feel uncomfortable or dangerous. It is characterized in that the illumination control is performed while suppressing the state from being changed to a simple state.

  In addition, in FIG. 1, although the three lighting fixtures 11a-11c were provided, it is not restricted to this, What is necessary is just to provide one or more lighting fixtures. This is because it is possible to realize a plurality of lighting modes (a plurality of spatial illuminations) with one or more lighting fixtures. However, in order to realize various lighting scenes (lighting modes), it is preferable to provide a plurality of lighting fixtures.

  In FIG. 1, two human sensors 12a and 12b are provided, but three or more human sensors may be provided. In FIG. 1, input devices such as a remote controller and operation switches for manually operating the lighting fixtures 11 a to 11 c are not shown, but such input devices may be provided. The input device may be a smartphone or a tablet terminal.

  FIG. 2 is a block diagram showing a configuration of the lighting control system 10 shown in FIG. As shown in the figure, the lighting control system 10 includes three lighting fixtures 11a to 11c, two human sensors 12a and 12b, and a lighting control device 20 connected to them in a wired or wireless manner. .

  The lighting control device 20 includes one or more lighting fixtures (here, the lighting fixtures 11a to 11c) and two or more human sensors (here, the human sensors 12a and 12b) having a plurality of lighting modes. It is a device that controls the illumination of the room 15. The illumination control device 20 includes a detection result acquisition unit 21, a storage unit 22, and a control unit 23.

  The detection result acquisition unit 21 is an example of a processing unit that acquires the detection results of the human sensors 12a and 12b, and is, for example, a communication interface that receives a signal transmitted from the human sensor.

  The storage unit 22 is a storage medium that stores the lighting mode information 22a and the state transition table 22b, and is, for example, a nonvolatile storage memory.

  The lighting mode information 22a is information created in advance indicating the correspondence between each of a plurality of combinations of the detection results of the human sensors 12a and 12b and the lighting modes of the lighting fixtures 11a to 11c. For example, FIG. It is a table.

  FIG. 3 is a diagram illustrating a data structure example of the lighting mode information 22a. Here, combinations of detection results of human sensors 12a and 12b ("S1" and "S2" correspond to detection results of human sensors 12a and 12b, respectively), "illumination control" (lighting mode), and illumination control The correspondence between the contents (“space illumination”) and “priority” is shown. Here, “◯” and “X” in the column of the detection result (“S1”, “S2”) respectively correspond to “the presence of a person is detected” and “the presence of a person is not detected”. “Priority” is a priority associated with the lighting mode, and here, the higher the “space illumination”, the higher the priority (small numerical value) is set. “Spatial illuminance” is illuminance at one or more places predetermined as typical places in the room 15 (in the case of using illuminance at a plurality of places, an average value of the plurality of illuminances).

  Note that the data structure of the lighting mode information 22a is not limited to the structure shown in FIG. For example, a table in which combinations of detection results of the human sensors 12a and 12b and “lighting control” (lighting mode) are associated with each other, and “lighting control” (lighting mode) and the content of lighting control (“space illumination”) ) And “priority” may be separated into tables associated with each other.

  The state transition table 22b is a table that is referred to when the control unit 23 switches the lighting modes of the lighting fixtures 11a to 11c, and before the lighting control by the control unit 23 is started, the control unit 23 performs lighting mode information. It is dynamically generated from 22a. Details of the state transition table 22b will be described later.

  The control unit 23 is a processing unit that controls the lighting fixtures 11a to 11c according to the combination of the detection results of the human sensors 12a and 12b acquired by the detection result acquisition unit 21 while referring to the lighting mode information 22a. For example, it is a microcomputer with a built-in program. More specifically, the control unit 23 specifies the lighting mode corresponding to the combination of the detection results of the human sensors 12a and 12b acquired by the detection result acquisition unit 21 with reference to the lighting mode information 22a. And the control part 23 controls the lighting fixtures 11a-11c so that the lighting fixtures 11a-11c will be in the specified lighting mode (here light control). For example, when the lighting fixtures 11a to 11c are downlights, the control unit 23 performs phase control dimming or dimming via a dedicated control line on the lighting fixtures 11a to 11c. The phase control dimming is dimming by controlling the phase of power supplied to the lighting fixtures 11a to 11c. Further, when the lighting fixtures 11a to 11c are ceiling lights, the control unit 23 sends a dimming signal (duty signal) to the lighting fixtures 11a to 11c by an infrared ray or a wireless signal, so that PWM (Pulse) is transmitted. Width modulation is performed. The PWM dimming is dimming in which the lighting fixtures 11a to 11c control the brightness according to the dimming signal (duty signal) sent from the control unit 23.

  Here, as characteristic control, the control unit 23 uses priority when switching the lighting mode according to the change in the combination of the detection results of the human sensors 12a and 12b acquired by the detection result acquisition unit 21. Depending on the switching case, a waiting time is provided.

  FIG. 4 is a flowchart illustrating the function of the lighting mode switching control using the priority order by the control unit 23. Now, the control unit 23 refers to the lighting mode information 22a according to the change in the combination of the detection results of the human sensors 12a and 12b acquired by the detection result acquisition unit 21, thereby changing the first lighting mode to the second lighting mode. (S10). In this case, the control unit 23 obtains a first priority that is a priority given in advance to the first lighting mode and a second priority that is a priority given in advance to the second lighting mode. Compare (S11).

  As a result, when the second priority is lower than the first priority (Yes in S11), the control unit 23 maintains the first lighting mode for a predetermined standby time from the time when the combination of detection results changes. After that, the first switching mode for switching to the second lighting mode is executed (S12). Here, as shown in FIG. 5, the “waiting time” is a distance between two human sensors (here, human sensors 12 a and 12 b) that are provided in the room 15 and are located farthest from each other. Is a time greater than or equal to the time obtained by dividing the distance by a predetermined speed as the walking speed of the person. That is, the “standby time” is a value set in advance as such a time. On the other hand, when the second priority is not lower than the first priority (No in S11), the controller 23 changes from the first lighting mode to the second when the combination of detection results changes (that is, immediately). A second switching mode for switching to the lighting mode is executed (S13).

  With such characteristic control by the control unit 23, when switching to a lighting mode with a low priority (here, low spatial illuminance), a lighting mode with a high previous priority (that is, high spatial illuminance). Is maintained after the waiting time is maintained. Therefore, it is possible to prevent the moving person 16 from being uncomfortable or dangerous.

  Next, operation | movement of the illumination control system 10 in this Embodiment comprised as mentioned above is demonstrated.

  FIG. 6 is a flowchart showing the operation of the illumination control system 10 in the present embodiment.

  Prior to lighting control, the control unit 23 of the lighting control device 20 generates a state transition table 22b from the lighting mode information 22a stored in the storage unit 22 according to the processing procedure shown in FIG. Store it in. This generation process is performed only once unless the lighting mode information 22a is changed. Specifically, the control unit 23 refers to the lighting modes and priorities registered in the lighting mode information 22a, and switches all the combinations of switching of lighting modes that can occur according to the procedure shown in FIG. Is generated, the state transition table 22b is generated. For example, in the case of switching from the lighting mode 1 to the lighting mode 2, the control unit 23 has a lower priority ("2") corresponding to the lighting mode 2 than the priority ("1") corresponding to the lighting mode 1. Therefore, it is determined that the first switching mode should be executed. Hereinafter, similarly, the control unit 23 determines the switching mode according to the procedure shown in FIG. 4 for all combinations of switching of the lighting modes.

  FIG. 7 is a diagram illustrating a data structure example of the state transition table 22b generated by the control unit 23. As illustrated in FIG. The state transition table 22b includes a first switching mode and a second switching mode when the control unit 23 switches the lighting modes of the lighting fixtures 11a to 11c (switches from the first lighting mode to the second lighting mode) according to the lighting mode information 22a. It is the information which shows which should be performed. As described above, the first switching mode is a switching mode for switching to the second lighting mode after maintaining the first lighting mode for the standby time. The second switching mode is a switching mode that switches from the first lighting mode to the second lighting mode when the combination of detection results changes.

  As shown in FIG. 7, the state transition table 22b includes a plurality of lighting modes that can be used as the first lighting mode (“before switching”) and a plurality of lighting modes that can be used as the second lighting mode (“ For each combination with “after switching”), the type of switching mode is registered. In FIG. 7, the first switching mode and the second switching mode are indicated as “with standby time” and “without standby time”, respectively. In the state transition table 22b shown in FIG. 7, since it is generated by the processing procedure of FIG. 4, “waiting time (first switching mode)” (other than that only) when transitioning to the lower priority lighting mode. In the transition, it is indicated that switching is performed without “waiting time (second switching mode)”. Prior to lighting control, the control unit 23 generates the state transition table 22b, and in lighting control, switching the lighting mode without referring to the state transition table 22b enables faster switching control.

  After the above advance preparation, as shown in FIG. 6, first, the control unit 23 acquires the detection results of the human sensors 12a and 12b via the detection result acquisition unit 21 (S21). Then, the control unit 23 refers to the lighting mode information 22a stored in the storage unit 22, so that the lighting mode corresponding to the combination of the detection results of the human sensors 12a and 12b just acquired, that is, the next switching candidate. The lighting mode is determined (S22).

  Note that the control unit 23 holds information indicating the current lighting mode (information indicating the lighting mode 4 with the lowest priority as an initial value) in a series of iterative processes S21 to S28.

  Next, the control unit 23 stores the state transition stored in the storage unit 22 for the current lighting mode (first lighting mode (before switching)) and the lighting mode just acquired (second lighting mode (after switching)). By referring to Table 22b, it is confirmed whether or not there is a switching mode, that is, a waiting time (S23).

  As a result, when it is confirmed in the state transition table 22b that switching to “with standby time (first switching mode)” should be performed (“with standby time” in S23), the control unit 23 continues to wait. The passage of time is confirmed (S24). Specifically, the control unit 23 has a built-in counter for standby time (standby time counter), and checks whether the standby time counter has reached a value corresponding to a preset standby time.

  As a result, when it is confirmed that the standby time has not elapsed (“not elapsed” in S24), the control unit 23 sets the standby time counter to a predetermined value (for example, one iteration of S21 to S28). The value is advanced by a value corresponding to the time required (S25). Thereafter, the control unit returns to the process of acquiring the detection results of the human sensors 12a and 12b again (S21) while maintaining the current lighting mode (S26), and repeats a series of processes (S21 to S28).

  On the other hand, if it is confirmed in step S23 that “no waiting time (second switching mode)” should be switched (“no waiting time” in S23), and it is confirmed that the waiting time has elapsed in step S24. If it has been performed (“not elapsed” in S24), the following processing is performed. That is, the control unit 23 controls the lighting fixtures 11a to 11c so as to switch to the switching candidate lighting mode (S27). Then, as a post-process, the control unit 23 resets the standby time counter (S28), and updates the information indicating the current lighting mode to indicate the lighting mode after switching (S26). Thereafter, the series of processes S21 to S28 described above are repeated.

  FIG. 8 is a timing chart showing a specific operation example of the illumination control system 10 in the present embodiment. Here, the combination of the detection results of the human sensors 12a and 12b ("detection state"), the detection result of the human sensor 12a ("human sensor 12a (S1)"), and the detection result of the human sensor 12b ("human The timing of the sensation sensor 12b (S2) ") and" lighting mode "is shown. In “human sensor 12a (S1)” and “human sensor 12b (S2)”, the Hi level corresponds to “the presence of a person is detected (“ ◯ ”in lighting mode information 22a)”, and the Low level is This corresponds to “the presence of a person is not detected (“ × ”in the lighting mode information 22a”). In addition, in the timing chart of “lighting mode”, the type of lighting mode and the spatial illuminance are shown in parentheses below.

  As shown in FIG. 8, first, the human sensor 12a (S1) does not detect the presence of a person, and the human sensor 12b (S2) detects the presence of a person (detection state 1). Suppose that In this detection state 1, the control unit 23 controls the lighting fixtures 11a to 11c to the lighting mode 3 by referring to the lighting mode information 22a.

  Next, when the person 16 moves, the detection state changes from the detection state 1 to the detection state 2 (the presence of a person is detected by the human sensor 12a (S1) and the human presence is detected by the human sensor 12b (S2)). Is detected). In such a detection state transition, the control unit 23 refers to the lighting mode information 22a to recognize that the lighting mode as the switching candidate is the lighting mode 1. Further, the control unit 23 can refer to the state transition table 22b to determine that switching from the current lighting mode 3 to the next lighting mode 1 is switching in “no waiting time (second switching mode)”. . Therefore, the control part 23 switches the lighting fixtures 11a-11c to the lighting mode 1 immediately.

  Subsequently, when the person 16 moves, the detection state is changed from the detection state 2 to the detection state 3 (the presence of a person is detected by the human sensor 12a (S1), and the presence of the person is detected by the human sensor 12b (S2). Is changed to a state where is not detected). In such a detection state transition, the control unit 23 refers to the lighting mode information 22a to recognize that the lighting mode as the switching candidate is the lighting mode 2. Further, the control unit 23 can refer to the state transition table 22b to determine that the switching from the current lighting mode 1 to the next lighting mode 2 is the switching in “with standby time (first switching mode)”. . Therefore, the control unit 23 switches the lighting fixtures 11a to 11c to the lighting mode 2 after waiting for the standby time from the time when the detection state changes.

  Subsequently, when the person 16 moves, the detection state is changed from the detection state 3 to the detection state 4 (the presence sensor 12a (S1) does not detect the presence of a person and the presence sensor 12b (S2) It is assumed that there is a change to a state where existence is not detected. In such a detection state transition, the control unit 23 refers to the lighting mode information 22a to recognize that the lighting mode as the switching candidate is the lighting mode 4. Further, the control unit 23 can refer to the state transition table 22b to determine that switching from the current lighting mode 2 to the next lighting mode 4 is switching in “with standby time (first switching mode)”. . Therefore, the control unit 23 switches the lighting fixtures 11a to 11c to the lighting mode 4 after waiting for the standby time from the time when the detection state changes.

  Subsequently, when the person 16 moves, the detection state changes from the detection state 4 to the detection state 5 (the presence sensor 12a (S1) does not detect the presence of a person and the presence sensor 12b (S2) State where the presence is detected). In such a detection state transition, the control unit 23 refers to the lighting mode information 22a to recognize that the lighting mode as the switching candidate is the lighting mode 3. Further, the control unit 23 can refer to the state transition table 22b to determine that switching from the current lighting mode 4 to the next lighting mode 3 is switching in “no waiting time (second switching mode)”. . Therefore, the control unit 23 immediately switches the lighting fixtures 11a to 11c to the lighting mode 3 when the detection state changes.

  Subsequently, when the person 16 moves, the detection state is changed from the detection state 5 to the detection state 6 (the presence of a person is not detected by the human sensor 12a (S1) and the human sensor 12b (S2) It is assumed that there is a change to a state where existence is not detected. In such a detection state transition, the control unit 23 refers to the lighting mode information 22a to recognize that the lighting mode as the switching candidate is the lighting mode 4. Further, the control unit 23 can refer to the state transition table 22b to determine that switching from the current lighting mode 3 to the next lighting mode 4 is switching in “with standby time (first switching mode)”. . Therefore, the control unit 23 tries to switch the lighting fixtures 11a to 11c to the lighting mode 4 after waiting for the standby time from the time when the detection state is changed.

  However, in this transition example, before the standby time elapses, the detection state is changed from the detection state 6 to the detection state 7 (the presence of a person is detected by the human sensor 12a (S1) and the human sensor 12b (S2). In a state where the presence of a person is not detected). Therefore, since the transition of the detection state is detected before the standby time elapses, the control unit 23 refers to the lighting mode information 22a, so that the lighting mode that is the switching candidate is the previous lighting mode. It turns out that it is lighting mode 2 instead of 4. Further, the control unit 23 can refer to the state transition table 22b to determine that the current switching from the lighting mode 3 to the lighting mode 2 is switching in “no waiting time (second switching mode)”. Therefore, when the detection state changes from the detection state 6 to the detection state 7, the control unit 23 ends the standby until then and switches the lighting fixtures 11a to 11c to the lighting mode 2.

  As described above, according to the present embodiment, in switching the lighting mode, when switching to a lighting mode having a low priority (here, low spatial illuminance), the previous priority is high (that is, the space Switching is performed after maintaining the lighting mode (high illuminance) for the waiting time. Therefore, even if the detection state changes due to the movement of the person 16, suddenly lowering the spatial illuminance is suppressed, so that the moving person 16 is uncomfortable or dangerous. It is suppressed.

  Here, the waiting time is determined in advance by using a distance between two human sensors (in this case, human sensors 12a and 12b) that are provided in the room 15 and are located farthest as human walking speeds. It is set to a time longer than the time obtained by dividing by a predetermined speed. As a result, even when the person 16 walks and passes through an area that does not belong to any of the detection ranges of the human sensors 12a and 12b, at least the time when the person 16 passes through the area maintains the previous lighting mode. Is done. Therefore, it is possible to prevent the person 16 from being uncomfortable or dangerous.

  In switching the lighting mode, when switching to a lighting mode having a high priority (here, high spatial illuminance), the switching is immediately performed when the detection state changes. Therefore, when the person 16 moves to a space where a higher space illuminance is set, the person 16 is immediately changed to a higher space illuminance, so that the moving person 16 is not uncomfortable.

  The lighting mode information 22a can be changed. That is, the control unit 23 can obtain an operator instruction from an input device (not shown), and can change the lighting mode information 22 a stored in the storage unit 22 in accordance with the instruction. When the lighting mode information 22a is changed, the control unit 23 again performs the state transition table stored in the storage unit 22 so as to be consistent with the changed lighting mode information 22a in accordance with the processing procedure shown in FIG. 22b is updated. When the lighting mode information 22a is changed and the state transition table 22b is updated, the control unit 23 uses the lighting mode information 22a after the change and the state transition table 22b after the update to control the switching of the lighting mode (FIG. 6). S21 to S28).

  FIG. 9A is a diagram illustrating a modification example of the lighting mode information 22a. FIG. 9B is a diagram illustrating an update example of the state transition table 22b accompanying the change of the lighting mode information 22a illustrated in FIG. 9A. In this example, as shown in FIG. 9A, in the lighting mode information 22a, the corresponding “space illuminance” and “priority order” are changed for “lighting mode 2” and “lighting mode 4”. As a result, as shown in FIG. 9B, in the state transition table 22b, switching is performed for transition points related to “lighting mode 2” and “lighting mode 4” so as to be consistent with the changed lighting mode information 22a. The mode has been changed.

  Thus, when the lighting mode information 22a stored in the storage unit 22 is changed, the control unit 23 updates the state transition table 22b stored in the storage unit 22 in accordance with the change of the lighting mode information 22a. And the control part 23 performs switching control of lighting mode using the lighting mode information 22a after a change, and the state transition table 22b after an update. Thereby, the operator can correspond to the combination of the detection results of the human sensors 12a and 12b and the “illumination control” (lighting mode), and the contents of the “illumination control” (lighting mode) and the lighting control (“space illumination” ") And" priority "can be changed. Therefore, the illumination control system 10 having a flexible function capable of controlling the lighting mode preferred by the operator is realized.

  In the present embodiment, the “space illuminance” is the illuminance at one or more predetermined locations as representative locations in the room 15 (if the illuminance at multiple locations is used, Average value of illuminance), but is not limited to this definition. The “space illuminance” may be determined by the dimming rate (0 to 100%) of the lighting fixture, or may be determined by the amount of luminous flux (lumen lm) of the lighting fixture.

  (A) of FIG. 10 is a figure which shows the example of the information table which defines "space illumination intensity" with the light control rate of a lighting fixture. In the information table shown in FIG. 10 (a), the dimming rate of five lighting fixtures ("lighting 1" to "lighting 5") and "space illumination" are associated with each of the five lighting modes. ing. “Spatial illuminance” is an average value of dimming rates of five lighting fixtures (“lighting 1” to “lighting 5”). Such an information table is stored in the storage unit 22, and the control unit 23 refers to the information table when switching the lighting mode, and controls the dimming rate of the five lighting fixtures, thereby reducing the “space illuminance”. Can be realized.

  FIG. 10B is a diagram illustrating an example of an information table that defines “spatial illuminance” by the amount of luminous flux of the lighting fixture. In the information table shown in FIG. 10B, the luminous flux amounts of four lighting fixtures (“lighting 1” to “lighting 4”) and “space illumination” are associated with each other for each of the five lighting modes. Yes. The “space illuminance” is the four lighting fixtures (“lighting 1” to “lighting 4”) in the lighting mode with respect to the total of the maximum luminous flux amounts of the four lighting fixtures (“lighting 1” to “lighting 4”). ) Of the total luminous flux. Such an information table is stored in the storage unit 22, and the control unit 23 refers to the information table when switching the lighting mode, and controls the light flux amounts of the four lighting fixtures, thereby “space illumination”. The lighting mode defined by can be realized.

(Embodiment 2)
Next, the lighting control device and the lighting control method according to the present invention will be described in detail using Embodiment 2 of the present invention (here, a lighting control system). In the first embodiment, the lighting mode corresponds to an illumination scene defined by the spatial illuminance of the room. However, in the present embodiment, the lighting mode corresponds to an illumination scene defined by the color temperature of the illumination light. Hereinafter, a description will be given focusing on differences from the first embodiment.

  FIG. 11 is a diagram illustrating a scene to which the illumination control system 30 according to the second embodiment of the present invention is applied. Here, an example in which a lighting control system 30 is provided in a living dining room is shown. The left area in FIG. 11 is a living room, and the right area in FIG. 11 is a dining area. The living room and the dining area constitute one room without a partition.

  The illumination control system 30 is a system that controls illumination in conjunction with the detection result of the human sensor, and includes five lighting fixtures 31a to 31e, two human sensors 32a and 32b, and an illumination control device 40. Consists of

  The five lighting fixtures 31a to 31e are fixtures that illuminate in a plurality of lighting modes under the control of the lighting control device 40, for example, a down light having an LED light source. Light or ceiling light. Of the five lighting fixtures 31a to 31e, three lighting fixtures 31a to 31c are installed in the living room, and two lighting fixtures 31d and 31e are installed in the dining room. Here, the “lighting mode” is an operation mode of the lighting fixtures 31a to 31e, and in this embodiment, an operation mode that realizes an illumination scene defined by the color temperature of the illumination light.

  The two human sensors 32a and 32b are sensors that detect the presence / absence of a person, for example, sensors that detect the presence / absence of a person using infrared rays, ultrasonic waves, or visible light. Of the two human sensors 32a and 32b, one human sensor 32a is installed in the living room, and the other human sensor 32b is installed in the dining room.

  The lighting control device 40 is a device that controls the lighting of the room by controlling the lighting fixtures 31a to 31e based on the combination of the detection results of the human sensors 32a and 32b. The lighting control device 40 may cause a person to feel uncomfortable or dangerous even when the person moves through a region that does not belong to any of the detection ranges of the human sensors 32a and 32b. It has a feature in that it performs illumination control that suppresses or

  In addition, in FIG. 11, although five lighting fixtures 31a-31e were provided, it is not restricted to this, What is necessary is just to provide one or more lighting fixtures. This is because even with one or more lighting fixtures, it is possible to realize a plurality of lighting modes (a lighting scene with a plurality of illumination lights having different color temperatures). However, in order to realize various lighting scenes (lighting modes), it is preferable to provide a plurality of lighting fixtures.

  In FIG. 11, two human sensors 32a and 32b are provided, but three or more human sensors may be provided. In FIG. 11, input devices such as a remote controller and operation switches for manually operating the lighting fixtures 31a to 31e are not shown, but such input devices may be provided. The input device may be a smartphone or a tablet terminal.

  FIG. 12 is a block diagram showing a configuration of the illumination control system 30 shown in FIG. As shown in the figure, the lighting control system 30 includes five lighting fixtures 31a to 31e, two human sensors 32a and 32b, and a lighting control device 40 connected to them in a wired or wireless manner. .

  The lighting control device 40 is provided with one or more lighting fixtures (here, lighting fixtures 31a to 31e) having two or more lighting modes and two or more human sensors (here, human sensors 32a and 32b). It is a device that controls the lighting in the room. The illumination control device 40 includes a detection result acquisition unit 41, a storage unit 42, and a control unit 43.

  The detection result acquisition unit 41 is an example of a processing unit that acquires the detection results of the human sensors 32a and 32b, and is, for example, a communication interface that receives a signal transmitted from the human sensor.

  The storage unit 42 is a storage medium that stores the lighting mode information 42a and the state transition table 42b, and is, for example, a nonvolatile storage memory.

  The lighting mode information 42a is information created in advance indicating the correspondence between each of a plurality of combinations of the detection results of the human sensors 32a and 32b and the lighting modes of the lighting fixtures 31a to 31e. For example, FIG. It is a table.

  FIG. 13 is a diagram illustrating a data structure example of the lighting mode information 42a. Here, combinations of detection results of the human sensors 32a and 32b (“S1” and “S2” correspond to detection results of the human sensors 32a and 32b, respectively), “illumination control” (lighting mode), and illumination control. The correspondence between the contents (“color temperature”) and “priority” is shown. Here, “◯” and “X” in the column of the detection result (“S1”, “S2”) respectively correspond to “the presence of a person is detected” and “the presence of a person is not detected”. The “priority order” is a priority associated with the lighting mode, and here, the higher the “color temperature”, the higher the priority (a smaller numerical value) is set.

  Here, the “color temperature” is the color temperature of illumination light emitted from one or more lighting fixtures selected in advance as a representative lighting fixture among the five lighting fixtures 31a to 31e (a plurality of lighting fixtures are selected. The average color temperature of the illumination light emitted by the plurality of lighting fixtures). In the present embodiment, the lighting mode 1 is an operation mode in which the average color temperature of the illumination light emitted from the lighting fixtures 31a to 31e is 5000K, and illuminates the space regardless of the application. The lighting mode 2 is an operation mode in which the average color temperature of the illumination light emitted from the lighting fixtures 31a to 31e is 2800K and a relaxing atmosphere is created. The lighting mode 3 is an operation mode in which the average color temperature of the illumination light emitted from the lighting fixtures 31a to 31e is 6200K and provides brightness suitable for learning and reading. The lighting mode 4 is an operation mode in which the average color temperature of the illumination light emitted from the lighting fixtures 31a to 31e is 2500K, and the brightness suitable for sleeping is provided.

  Note that the data structure of the lighting mode information 42a is not limited to the structure shown in FIG. For example, a table in which combinations of detection results of the human sensors 32a and 32b and “lighting control” (lighting mode) are associated, and “lighting control” (lighting mode) and the content of lighting control (“color temperature”) ) And “priority” may be separated into tables associated with each other.

  The state transition table 42b is a table that is referred to when the control unit 43 switches the lighting modes of the lighting fixtures 31a to 31e, and before the lighting control by the control unit 43 is started, the control unit 43 performs lighting mode information. It is dynamically generated from 42a. Details of the state transition table 42b will be described later.

  The control unit 43 is a processing unit that controls the lighting fixtures 31a to 31e according to the combination of the detection results of the human sensors 32a and 32b acquired by the detection result acquisition unit 41 while referring to the lighting mode information 42a. For example, it is a microcomputer with a built-in program. More specifically, the control unit 43 specifies the lighting mode corresponding to the combination of the detection results of the human sensors 32a and 32b acquired by the detection result acquisition unit 41 by referring to the lighting mode information 42a. And the control part 43 controls the lighting fixtures 31a-31e so that the lighting fixtures 31a-31e become the specified lighting mode (it adjusts a color here). For example, when the lighting fixtures 31a to 31e are downlights, the control unit 43 performs phase control dimming or dimming via a dedicated control line on the lighting fixtures 31a to 31e. Moreover, when the lighting fixtures 31a-31e are ceiling lights, the control part 43 sends a dimming signal (duty signal) with infrared rays or a radio signal with respect to the lighting fixtures 31a-31e, and PWM dimming is carried out. I do.

  Here, as characteristic control, the control unit 43 uses priority when switching the lighting mode according to the change in the combination of the detection results of the human sensors 32a and 32b acquired by the detection result acquisition unit 41. Depending on the switching case, a waiting time is provided. The function of the lighting mode switching control by the control unit 43 using the priority order is as shown in the flowchart of FIG. 4 as in the first embodiment. That is, when switching to the lighting mode with a low priority (here, the color temperature is low), the control unit 43 maintains the lighting mode with the immediately higher priority (that is, the color temperature is high) for the standby time. Later, the lighting mode is switched. Accordingly, it is possible to suppress discomfort or a dangerous state for the moving person. In the present embodiment, the “standby time” is as defined in FIG. 5 as in the first embodiment.

  Next, the operation of the illumination control system 30 in the present embodiment configured as described above will be described.

  The basic operation of the lighting control system 30 in the present embodiment is as shown in the flowchart of FIG. 6 as in the first embodiment.

  Also in the present embodiment, as in the first embodiment, the control unit 43 of the lighting control device 40 performs the lighting mode information stored in the storage unit 42 in accordance with the processing procedure shown in FIG. 4 prior to the lighting control. A state transition table 42b is generated from 42a and stored in the storage unit 42. This generation process is performed only once unless the lighting mode information 42a is changed.

  FIG. 14 is a diagram illustrating a data structure example of the state transition table 42 b generated by the control unit 43. The state transition table 42b includes a first switching mode and a second switching mode when the control unit 43 switches the lighting modes of the lighting fixtures 31a to 31e according to the lighting mode information 42a (switches from the first lighting mode to the second lighting mode). It is the information which shows which should be performed. The first switching mode is a switching mode for switching to the second lighting mode after maintaining the first lighting mode for the standby time. The second switching mode is a switching mode that switches from the first lighting mode to the second lighting mode when the combination of detection results changes.

  As shown in FIG. 14, the state transition table 42 b includes a plurality of lighting modes that can be taken as the first lighting mode (“before switching”) and a plurality of lighting modes that can be taken as the second lighting mode (“ For each combination with “after switching”), the type of switching mode is registered. In FIG. 14, the first switching mode and the second switching mode are indicated as “with standby time” and “without standby time”, respectively. In the state transition table 42b shown in FIG. 14, as in the first embodiment, “waiting time (first switching mode)” (standby for other transitions) is used only when transitioning to a lower priority lighting mode. No time (second switching mode) ”).

  After the above advance preparation, the control part 43 performs illumination control in the procedure shown by the flowchart of FIG. That is, first, the control unit 43 acquires the detection results of the human sensors 32a and 32b via the detection result acquisition unit 41 (S21). And the control part 43 refers to the lighting mode information 42a stored in the memory | storage part 42, The lighting mode corresponding to the combination of the detection result of the human sensors 32a and 32b acquired now, ie, the next switching candidate The lighting mode is determined (S22).

  The control unit 43 holds information indicating the current lighting mode (information indicating the lighting mode 4 with the lowest priority as an initial value) in a series of iterative processes S21 to S28.

  Next, the control unit 43 stores state transitions stored in the storage unit 42 for the current lighting mode (first lighting mode (before switching)) and the lighting mode just acquired (second lighting mode (after switching)). By referring to the table 42b, the switching mode, that is, the presence or absence of the standby time is confirmed (S23).

  As a result, when it is confirmed in the state transition table 42b that switching to “with standby time (first switching mode)” should be performed (“with standby time” in S23), the control unit 43 continues to wait. The passage of time is confirmed (S24). Specifically, the control unit 43 has a built-in counter for standby time (standby time counter), and checks whether the standby time counter has reached a value corresponding to a preset standby time.

  As a result, when it is confirmed that the standby time has not elapsed (“not elapsed” in S24), the control unit 43 sets the standby time counter to a predetermined value (for example, one iteration of S21 to S28). The value is advanced by a value corresponding to the time required (S25). Thereafter, the control unit returns to the process of acquiring the detection results of the human sensors 32a and 32b again (S21) while maintaining the current lighting mode (S26), and repeats a series of processes (S21 to S28).

  On the other hand, if it is confirmed in step S23 that “no waiting time (second switching mode)” should be switched (“no waiting time” in S23), and it is confirmed that the waiting time has elapsed in step S24. If it has been performed (“not elapsed” in S24), the following processing is performed. That is, the control unit 43 controls the lighting fixtures 31a to 31e so as to switch to the switching candidate lighting mode (S27). And as a post-process, the control part 43 resets a standby | waiting time counter (S28), and updates the information which shows the present lighting mode so that it may show the lighting mode after switching (S26). Thereafter, the series of processes S21 to S28 described above are repeated.

  FIG. 15 is a timing chart showing a specific operation example of the illumination control system 30 in the present embodiment. Here, the combination of the detection results of the human sensors 32a and 32b ("detection state"), the detection result of the human sensor 32a ("human sensor 32a (S1)"), and the detection result of the human sensor 32b ("human" The timing of the sensation sensor 32b (S2) ") and" lighting mode "is shown. In the “human sensor 32a (S1)” and “human sensor 32b (S2)”, the Hi level corresponds to “the presence of a person is detected (“ ◯ ”in the lighting mode information 42a)”, and the Low level is This corresponds to “the presence of a person is not detected (“ × ”in the lighting mode information 42a”). In the timing chart of “lighting mode”, the type of lighting mode and the color temperature in parentheses are shown below.

  As shown in FIG. 15, first, the presence of a person is not detected by the human sensor 32a (S1), and the presence of a person is detected by the human sensor 32b (S2) (detection state 1). Suppose that In this detection state 1, the control unit 43 controls the lighting fixtures 31a to 31e to the lighting mode 3 by referring to the lighting mode information 42a.

  Next, when the person moves, the detection state is changed from the detection state 1 to the detection state 2 (the presence of the person is detected by the human sensor 32a (S1), and the presence of the person is detected by the human sensor 32b (S2). Detected state). In such a detection state transition, the control unit 43 refers to the lighting mode information 42a to recognize that the lighting mode that is a switching candidate is the lighting mode 1. Further, the control unit 43 can refer to the state transition table 42b to determine that the switching from the current lighting mode 3 to the next lighting mode 1 is the switching in “with standby time (first switching mode)”. . Therefore, the control unit 43 switches the lighting fixtures 31a to 31e to the lighting mode 1 after waiting for the standby time from the time when the detection state changes.

  Subsequently, when the person moves, the detection state is changed from the detection state 2 to the detection state 3 (the presence of the person is detected by the human sensor 32a (S1), and the presence of the person is detected by the human sensor 32b (S2). It is assumed that it has changed to a state where it is not detected. In such a detection state transition, the control unit 43 refers to the lighting mode information 42a to recognize that the lighting mode that is the switching candidate is the lighting mode 2. Further, the control unit 43 can refer to the state transition table 42b to determine that the switching from the current lighting mode 1 to the next lighting mode 2 is the switching in “with standby time (first switching mode)”. . Therefore, the control unit 43 switches the lighting fixtures 31a to 31e to the lighting mode 2 after waiting for the standby time from the time when the detection state changes.

  Subsequently, due to the movement of the person, the detection state is changed from the detection state 3 to the detection state 4 (the presence of the person is not detected by the human sensor 32a (S1) and the human presence is detected by the human sensor 32b (S2)). Is changed to a state where is not detected). In such a detection state transition, the control unit 43 refers to the lighting mode information 42 a to recognize that the lighting mode as the switching candidate is the lighting mode 4. Further, the control unit 43 can refer to the state transition table 42b to determine that the switching from the current lighting mode 2 to the next lighting mode 4 is the switching in “with standby time (first switching mode)”. . Therefore, the control unit 43 switches the lighting fixtures 31a to 31e to the lighting mode 4 after waiting for the standby time from the time when the detection state changes.

  Subsequently, due to the movement of the person, the detection state is changed from the detection state 4 to the detection state 5 (the presence of the person is not detected by the human sensor 32a (S1), and the presence of the person by the human sensor 32b (S2)). Is detected). In such a detection state transition, the control unit 43 refers to the lighting mode information 42a to recognize that the lighting mode that is the switching candidate is the lighting mode 3. Further, the control unit 43 can refer to the state transition table 42b to determine that switching from the current lighting mode 4 to the next lighting mode 3 is switching in “no waiting time (second switching mode)”. . Therefore, the control unit 43 immediately switches the lighting fixtures 31a to 31e to the lighting mode 3 when the detection state changes.

  Subsequently, due to the movement of the person, the detection state is changed from the detection state 5 to the detection state 6 (the presence of the person is not detected by the human sensor 32a (S1), and the presence of the human is detected by the human sensor 32b (S2)) Is changed to a state where is not detected). In such a detection state transition, the control unit 43 refers to the lighting mode information 42 a to recognize that the lighting mode as the switching candidate is the lighting mode 4. Further, the control unit 43 can refer to the state transition table 42b to determine that the switching from the current lighting mode 3 to the next lighting mode 4 is the switching in “with standby time (first switching mode)”. . Therefore, the control unit 43 tries to switch the lighting fixtures 31a to 31e to the lighting mode 4 after waiting for the standby time from the time when the detection state is changed.

  However, in this transition example, before the standby time elapses, the detection state is changed from the detection state 6 to the detection state 7 (the presence of a person is detected by the human sensor 32a (S1) and the human sensor 32b (S2). In a state where the presence of a person is not detected). Therefore, since the transition of the detection state is detected before the standby time elapses, the control unit 43 refers to the lighting mode information 42a, so that the lighting mode that is the switching candidate is the previous lighting mode. It turns out that it is lighting mode 2 instead of 4. Further, the control unit 43 can refer to the state transition table 42b to determine that the current switching from the lighting mode 3 to the lighting mode 2 is the switching in “with standby time (first switching mode)”. Therefore, the control unit 43 switches the lighting fixtures 31a to 31e to the lighting mode 2 after waiting for the standby time from the time when the detection state changes from the detection state 5 to the detection state 6.

  As described above, according to the present embodiment, in switching the lighting mode, when switching to a lighting mode with a low priority (here, the color temperature is low), the previous priority is high (that is, the color The switch is made after maintaining the lighting mode (high temperature) for the waiting time. Therefore, even when the detection state changes due to the movement of a person, suddenly lowering the color temperature is suppressed, which may cause discomfort or a dangerous state for the moving person. It is suppressed.

  In switching the lighting mode, when switching to a lighting mode having a higher priority (here, the color temperature is high), the switching is immediately performed when the detection state changes. Therefore, when a person moves to a space where a higher color temperature is set, the person is immediately changed to a higher color temperature, so that no discomfort is given to the moving person.

  Further, the lighting mode information 42a can be changed as in the first embodiment. That is, the control unit 43 can acquire an operator instruction from an input device (not shown), and can change the lighting mode information 42 a stored in the storage unit 42 according to the instruction. When the lighting mode information 42a is changed, the control unit 43 again follows the processing procedure shown in FIG. 4 so that the state transition table stored in the storage unit 42 is matched with the lighting mode information 42a after the change. 42b is updated. When the lighting mode information 42a is changed and the state transition table 42b is updated, the control unit 43 uses the lighting mode information 42a after the change and the state transition table 42b after the update to control the lighting mode switching (FIG. 6). S21 to S28).

  As described above, when the lighting mode information 42a stored in the storage unit 42 is changed, the control unit 43 updates the state transition table 42b stored in the storage unit 42 according to the change of the lighting mode information 42a. Then, the control unit 43 performs lighting mode switching control using the changed lighting mode information 42a and the updated state transition table 42b. As a result, the operator associates the combination of the detection results of the human sensors 32a and 32b with the “illumination control” (lighting mode) and the contents of the “lighting control” (lighting mode) and the lighting control (“color temperature”). ") And" priority "can be changed. Therefore, the illumination control system 30 having a flexible function capable of controlling the lighting mode preferred by the operator is realized.

  As described above, in the first and second embodiments, the lighting control device controls lighting in a room in which one or more lighting fixtures having a plurality of lighting modes and two or more human sensors are installed. The method is executed. In the lighting control method, the detection result acquisition step of acquiring the detection results of two or more human sensors, the correspondence between each of a plurality of combinations of the detection results of two or more human sensors and the lighting mode of the lighting fixture The lighting mode corresponding to the combination of the detection results of two or more human sensors acquired by the detection result acquisition unit is identified by referring to the lighting mode information shown, and lighting is performed so that the lighting apparatus is in the specified lighting mode. Control steps for controlling the instrument. Here, in the control step, when switching from the first lighting mode to the second lighting mode according to the change in the combination of the detection results of the two or more human sensors acquired in the detection result acquiring step, the first lighting mode is compared with the first lighting mode. When a first priority that is a priority given in advance is compared with a second priority that is a priority given in advance to the second lighting mode, and the second priority is lower than the first priority. If the first lighting mode is maintained for a predetermined waiting time from the time when the combination of detection results changes, then the second lighting mode is switched to and the second priority is not lower than the first priority. When the combination of detection results changes, the first lighting mode is switched to the second lighting mode.

  As a result, when switching to a lighting mode having a low priority (low spatial illuminance or color temperature) in switching of the lighting mode, the lighting mode with the highest priorities (high spatial illuminance or color temperature) is set to the standby time. Only after maintenance is switched. Therefore, even if the detection state changes due to the movement of a person, suddenly lowering the spatial illuminance or color temperature is suppressed, which may cause discomfort or a dangerous state for the moving person. Is suppressed.

  The lighting control device and the lighting control method according to the present invention have been described based on the first and second embodiments, but the present invention is not limited to these first and second embodiments. Without departing from the gist of the present invention, various modifications conceived by those skilled in the art have been made in the first or second embodiment, and other forms constructed by combining some components in the first and second embodiments. Are included within the scope of the present invention.

  For example, in Embodiment 1 or 2, the room 15 (or living dining room) may be provided with an illuminance sensor connected to the lighting control device. The illumination control device may execute the illumination control shown in FIG. 6 only when the illuminance detected by the illuminance sensor exceeds (or does not exceed) a predetermined value. Thereby, for example, at night when the risk of movement in the room increases, the lighting control in the first or second embodiment is performed, which may cause discomfort or a dangerous state for the moving person. It is suppressed.

  In the first and second embodiments, the control unit 23 generates a state transition table from the lighting mode information prior to the lighting control, and switches the lighting mode while referring to the state transition table in the lighting control. However, it is not limited to this method. The controller 23 may determine the switching mode (from the first switching mode to the second switching mode) while referring to the lighting mode information in the illumination control without generating the state transition table.

  In addition, the present invention can be realized not only as the illumination control device, the illumination control method, and the illumination control system in the first and second embodiments, but also as a program that realizes the function of the control unit of the illumination control device. Furthermore, the present invention may be realized as a computer-readable recording medium such as a DVD on which the program is recorded.

DESCRIPTION OF SYMBOLS 10, 30 Lighting control system 11a-11c, 31a-31e Lighting fixture 12a, 12b, 32a, 32b Human sensor 15 Room 16 Person 20, 40 Lighting control apparatus 21, 41 Detection result acquisition part 22, 42 Storage part 22a, 42a Lighting mode information 22b, 42b State transition table 23, 43 Control unit

Claims (7)

An illumination control device that controls illumination of a room in which one or more lighting fixtures having a plurality of lighting modes and two or more human sensors are installed,
A detection result acquisition unit for acquiring detection results of the two or more human sensors;
A storage unit that stores lighting mode information indicating a correspondence between each of a plurality of combinations of detection results of the two or more human sensors and a lighting mode of the lighting fixture;
By referring to the lighting mode information, a lighting mode corresponding to a combination of the detection results of the two or more human sensors acquired by the detection result acquisition unit is specified, and the lighting apparatus becomes the specified lighting mode. And a control unit for controlling the lighting apparatus as described above,
The controller is
After specifying to switch from the first lighting mode to the second lighting mode according to the change in the combination of the detection results of the two or more human sensors acquired by the detection result acquisition unit, the first lighting mode A first priority that is a priority given in advance and a second priority that is a priority given in advance to the second lighting mode;
When the second priority is lower than the first priority, the second lighting mode is maintained after maintaining the first lighting mode for a predetermined waiting time from the time when the combination of the detection results is changed. Switch to
When the second priority is not lower than the first priority, the lighting control device switches from the first lighting mode to the second lighting mode when the combination of the detection results changes. The lighting mode is an operation mode of the lighting fixture that realizes a lighting scene defined by spatial illuminance in the room,
The lighting control device according to claim 1, wherein the priority is set to a higher priority as the spatial illuminance is higher. The lighting mode is an operation mode of the lighting fixture that realizes a lighting scene defined by the color temperature of the illumination light,
The lighting control device according to claim 1, wherein the priority is set to a higher priority as the color temperature is higher. The waiting time is equal to or longer than the time obtained by dividing the distance between the two most distant human sensors among the two or more human sensors by a predetermined speed as the walking speed of the person. The illumination control device according to any one of claims 1 to 3. The storage unit further includes the standby unit for each combination of a plurality of lighting modes that can be taken as the first lighting mode and a plurality of lighting modes that can be taken as the second lighting mode. Whether the first switching mode to switch to the second lighting mode after maintaining the first lighting mode for a period of time should be executed, or when the combination of the detection results changes, the first lighting mode is switched to the second lighting mode Storing a state transition table indicating whether or not the second switching mode should be executed;
When the lighting mode information stored in the storage unit is changed, the control unit updates the state transition table stored in the storage unit according to the change of the lighting mode information, and the updated The illumination control device according to claim 1, wherein the lighting control device is switched from the first lighting mode to the second lighting mode according to a state transition table. An illumination control method for controlling illumination of a room in which one or more lighting fixtures having a plurality of lighting modes and two or more human sensors are installed,
A detection result acquisition step of acquiring detection results of the two or more human sensors;
The two or more acquired in the detection result acquisition step by referring to lighting mode information indicating a correspondence between each of a plurality of combinations of detection results of the two or more human sensors and a lighting mode of the lighting fixture. A lighting step corresponding to a combination of detection results of the human sensor, and a control step of controlling the lighting fixture so that the lighting fixture is in the specified lighting mode,
In the control step,
After specifying to switch from the first lighting mode to the second lighting mode according to the change in the combination of the detection results of the two or more human sensors acquired in the detection result acquisition step, A first priority that is a priority given in advance and a second priority that is a priority given in advance to the second lighting mode;
When the second priority is lower than the first priority, the second lighting mode is maintained after maintaining the first lighting mode for a predetermined waiting time from the time when the combination of the detection results is changed. Switch to
When the second priority is not lower than the first priority, the lighting control method switches from the first lighting mode to the second lighting mode when the combination of the detection results changes. A program for a lighting control device for controlling lighting in a room in which one or more lighting fixtures having a plurality of lighting modes and two or more human sensors are installed,
The program which makes a computer perform the step in the lighting control method of Claim 6.

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